How is codominance expressed? how is codominance expressed? more than two alleles of a gene are present in a population. an intermediate phenotype is produced in the heterozygote. one allele is dominant and masks the other in the phenotype of the heterozygote. both alleles are expressed in the phenotype of the heterozygote.

Both alleles are expressed in the phenotype of the heterozygote.

Explanation:

If both alleles are dominant, then codominance can occur where they are both expressed. If one allele is dominant and the other is recessive, the dominant is expressed while the recessive is masked.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation: